CN116037999B - Portable spiral hole milling device and hole milling method - Google Patents
Portable spiral hole milling device and hole milling method Download PDFInfo
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- CN116037999B CN116037999B CN202310131073.3A CN202310131073A CN116037999B CN 116037999 B CN116037999 B CN 116037999B CN 202310131073 A CN202310131073 A CN 202310131073A CN 116037999 B CN116037999 B CN 116037999B
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- 238000003801 milling Methods 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 149
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000003908 quality control method Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a portable spiral hole milling device and a hole milling method, wherein the portable spiral hole milling device comprises a T-shaped outer cylinder, a cutter, a rotation mechanism, a revolution mechanism, a feeding mechanism, a deviation adjusting mechanism and a control module. The portable spiral hole milling device can meet the rotation and revolution and feeding requirements of a cutter during hole milling by utilizing the rotation mechanism, the revolution mechanism and the feeding mechanism; the eccentric adjustment of the cutter and the autorotation mechanism is realized by utilizing the eccentric adjustment mechanism; the touch screen and the control module are utilized to facilitate the realization of accurate automatic eccentric adjustment, thereby ensuring the quality control precision; the grab handle is used for facilitating the operation of an operator to hold the hole milling device.
Description
Technical Field
The invention relates to a hole milling device, in particular to a portable spiral hole milling device and a hole milling method.
Background
In the process of final assembly or assembly of modern aircrafts, the assembly of part of structural members is still required to be manually perforated under the restriction of working space and auxiliary tools. With the massive use of light materials such as carbon fiber composite materials and titanium alloys in aircraft structural members, handheld spiral hole milling devices have received high attention from the domestic aviation manufacturing industry, scientific research institutions and universities. Chinese patent 201310037325.2 discloses an eccentric adjusting mechanism, a hand-held screw hole milling device and a screw hole milling method thereof, and the structure and weight of the device are simplified by arranging an eccentric adjusting mechanism matched with the hand-held screw hole milling device. Chinese patent 202010313047.9 discloses a portable spiral hole milling unit, which omits an eccentric adjustment mechanism by selecting a spindle with an adjusted tool eccentricity, and simultaneously reduces the weight of the unit. Chinese patent 201911199609.5 discloses a portable helical hole milling device in which the eccentricity of a cutter is manually adjusted by an operator by configuring a scale for controlling the eccentricity adjustment. In order to ensure the hole making precision of the device and facilitate the use of operators, it is necessary to design a portable spiral hole milling device with the function of automatically adjusting the eccentricity of a cutter.
Disclosure of Invention
The invention aims to: the portable spiral hole milling device and the hole milling method realize automatic and accurate adjustment of the eccentricity of the cutter, overcome eccentric rotation of a revolution mechanism and an eccentric adjustment mechanism, and facilitate the holding of an operator.
The technical scheme is as follows: the portable spiral hole milling device comprises a T-shaped outer cylinder, a rotation mechanism, a revolution mechanism, a feeding mechanism, a deviation adjusting mechanism and a control module; the feeding mechanism, the deviation adjusting mechanism and the control module are all arranged in the T-shaped outer cylinder; the rotation mechanism is arranged on the revolution mechanism, and the left end of the rotation mechanism is used for installing a cutter; the revolution mechanism is arranged on the feeding device and is used for driving the rotation mechanism to revolve, and the feeding mechanism drives the revolution mechanism to feed; the eccentric amount of the rotation mechanism is regulated by the deviation regulating mechanism; the rotation mechanism, the revolution mechanism, the feeding mechanism and the deviation adjusting mechanism are all driven and controlled by the control module; and a touch screen electrically connected with the control module is arranged on the T-shaped outer cylinder body.
Further, the feeding mechanism comprises a feeding screw rod, a feeding driving motor, a left feeding cylinder body and a right feeding cylinder body; the right feeding cylinder body is transversely and slidably arranged on the right side in the T-shaped outer cylinder body; the feeding screw rod is transversely arranged on the right side in the T-shaped outer cylinder body in a rotary mode and used for driving the right feeding cylinder body to transversely move; the feed driving motor is used for driving the feed screw rod to rotate and is electrically connected with the control module; the left feeding cylinder body is transversely and slidably arranged at the left side in the T-shaped outer cylinder body; the left feeding cylinder body is fixedly connected with the right feeding cylinder body through two second guide rods penetrating through the left feeding cylinder body.
Further, the revolution mechanism comprises a revolution driving motor, an adapter flange and a revolution barrel;
The revolution cylinder body is transversely arranged on the left feeding cylinder body in a penetrating manner in a rotating manner; the revolution driving motor is arranged on the right feeding cylinder body and is electrically connected with the control module; an output shaft of the revolution driving motor is in butt joint with the right end of the revolution cylinder body through an adapter flange; a second eccentric inner hole for installing the rotation mechanism is eccentrically arranged on the left end of the revolution cylinder body.
Further, the rotation mechanism comprises an inner cylinder body, a rotation driving motor and a cutter receiving rod; the inner cylinder body is rotatably arranged on the second eccentric inner hole; a first eccentric inner hole is eccentrically arranged at the left end of the inner cylinder body; the rotation driving motor is arranged in the first eccentric inner hole and is electrically connected with the control module; the right end of the cutter receiving rod is butted on the output shaft of the rotation driving motor and is used for installing a cutter.
Further, the eccentricity of the first eccentric inner hole is equal to that of the second eccentric inner hole.
Further, the deviation adjusting mechanism comprises a deviation adjusting driving motor, a deviation adjusting screw rod, a deviation adjusting transmission module and an electromagnetic brake;
the deviation adjusting screw rod is transversely arranged on the right feeding cylinder body in a rotary mode and penetrates through the left feeding cylinder body in a rotary mode; the deviation adjusting driving motor is used for driving the deviation adjusting screw rod to rotate and is electrically connected with the control module; the two second guide rods penetrate through the sliding support in a sliding mode, and the deviation adjusting screw rod penetrates through the sliding support in a threaded screwing mode; the rotary lining cylinder is coaxially and rotatably arranged in the sliding support seat through a plurality of radial rotating assemblies and sleeved on the revolution cylinder; an avoidance hole is axially arranged on the revolution cylinder; an axial spiral groove is spirally arranged on the outer circumferential surface of the inner cylinder body; a driving rod with the end part penetrating through the avoidance hole and extending into the axial spiral groove is arranged on the inner wall of the rotary lining barrel, and the diameter of the driving rod is equal to the width of the axial spiral groove; the width of the axial spiral groove of the inner cylinder body is equal to the width of the avoidance hole of the revolution cylinder body; the electromagnetic brake is used for controlling the relative rotation state of the inner cylinder body and the revolution cylinder body under the control of the control module.
Further, the radial rotation assembly comprises a rolling bearing and a mounting shaft; the mounting shaft is fixed on the sliding support, and the other end of the mounting shaft is mounted on the rolling bearing; an annular groove matched with the rolling bearing is coaxially arranged on the outer circumferential surface of the rotary lining barrel.
Further, the portable bracket is also included; the portable bracket comprises a bottom plate, a positioning cylinder body, an adjustable bracket and two groups of locking mechanisms; the adjustable bracket comprises a supporting cylinder body, an internal thread sleeve and a rotating seat; the supporting cylinder is vertically fixed on the bottom plate; the internal thread sleeve is inserted on the upper end of the supporting cylinder body in a height-adjustable way; the rotating seat is fixed on the upper end of the internal thread sleeve; the positioning cylinder body is rotatably and adjustably arranged on the rotating seat through a rotating shaft; an annular plate is coaxially fixed at the right cylinder opening of the positioning cylinder; the T-shaped outer cylinder body is arranged on the annular plate through two groups of locking mechanisms, and the left side of the T-shaped outer cylinder body is inserted on the positioning cylinder body.
Further, the locking mechanism comprises a locking pipe, two locking plates, a locking rod and a locking driving unit; the locking pipe is fixed on the T-shaped outer cylinder body in a penetrating way, and the left end of the locking pipe penetrates through the annular plate; the left ends of the two locking plates are hinged in the locking pipe, and the middle parts of the two locking plates are connected through a reset spring; two pairs of thrust blocks are arranged on the left side surface of the annular plate; the locking rod is arranged on the locking pipe and used for extruding the two locking plates under the drive of the lock catch driving unit, so that the right ends of the two locking plates extending out of the locking pipe are tightly pressed on the two thrust blocks of the same pair.
Further, the invention also provides a hole milling method of the portable spiral hole milling device, which comprises the following steps:
Step 1, an operator inputs a diameter D H to be drilled, a diameter D t of a cutter, the number of teeth of the cutter and workpiece materials into a control module by using a touch screen 3;
and 2, performing eccentric adjustment on the cutter by using an offset adjusting mechanism, wherein the method comprises the following specific implementation steps of:
A. The control module automatically determines the eccentric quantity e of the cutter, namely e= (D H-dt)/2; automatically solving a control angle phi of the deviation demodulation driving device according to the structural parameters of the deviation demodulation mechanism;
B. The control module controls the deviation adjusting mechanism to enable the rotation mechanism and the revolution mechanism to relatively rotate;
C. According to the control angle phi, the control module automatically starts the deviation adjusting mechanism to adjust the cutter to a required eccentric position;
D. the control module controls the electric deviation adjusting mechanism to enable the autorotation mechanism to rotate along with the revolution mechanism, and adjustment is completed;
step 3, the control module regulates and controls the revolution mechanism, the axial feeding mechanism and the autorotation mechanism to finish spiral milling holes cooperatively, and the specific implementation steps are as follows:
E. According to the type of the workpiece material, the control module can automatically select the rotation speed, the revolution speed and the axial feeding speed, or an operator can set the rotation speed, the revolution speed and the axial feeding speed by combining the abrasion state of the cutter, and then the rotation mechanism, the revolution mechanism and the feeding mechanism are started to drive the cutter to rotate, revolve and axially feed until the hole is machined;
Step 4, repeatedly executing the step 3 when the holes with the same aperture are continuously machined; and (3) when the holes with different hole diameters continue to be machined, repeatedly executing the steps 1,2 and 3 until all the holes are machined.
Compared with the prior art, the invention has the beneficial effects that: the rotation and revolution requirements of the cutter during hole milling can be met by utilizing the rotation mechanism, the revolution mechanism and the feeding mechanism; the eccentric adjustment of the cutter and the autorotation mechanism is realized by utilizing the eccentric adjustment mechanism; the touch screen and the control module are utilized to facilitate the realization of accurate automatic eccentric adjustment, thereby ensuring the quality control precision; the grab handle is used for facilitating the operation of an operator to hold the hole milling device.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a front view of the T-shaped outer cylinder of the present invention;
FIG. 3 is a perspective view of the T-shaped outer cylinder of the present invention;
FIG. 4 is a cross-sectional view of (B-B) of FIG. 2;
FIG. 5 is a cross-sectional view of (C-C) of FIG. 4;
FIG. 6 is a perspective view of the right slipping barrel of the present invention;
Fig. 7 is a perspective view of the revolution cylinder of the present invention;
FIG. 8 is a perspective view of the inner barrel of the present invention;
FIG. 9 is an assembly view of the radial rotor assembly of the present invention;
FIG. 10 is a cross-sectional view of the latch mechanism of the present invention in an unlatched state;
FIG. 11 is a cross-sectional view of the latching mechanism of the present invention in a locked state;
fig. 12 is a schematic view of eccentric states of the revolution cylinder and the inner cylinder of the present invention.
Detailed Description
The technical scheme of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the terms "left", "right", "front", "rear", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 12, the portable helical milling device disclosed by the invention comprises: the device comprises a T-shaped outer cylinder body 1, a rotation mechanism, a revolution mechanism, a feeding mechanism, a deviation adjusting mechanism and a control module; the T-shaped outer cylinder body 1 consists of a left outer cylinder tube and a right outer cylinder body; the left outer cylinder pipe is coaxially communicated and fixed on the left end face of the right outer cylinder body; the feeding mechanism, the deviation adjusting mechanism and the control module are all arranged in the T-shaped outer cylinder body 1; the rotation mechanism is arranged on the revolution mechanism, and the left end of the rotation mechanism is used for installing the cutter 4; the revolution mechanism is arranged on the feeding device and is used for driving the rotation mechanism to revolve, and the feeding mechanism drives the revolution mechanism to feed; the eccentric amount of the rotation mechanism is regulated by the deviation regulating mechanism; the rotation mechanism, the revolution mechanism, the feeding mechanism and the deviation adjusting mechanism are all driven and controlled by the control module; a mounting groove 102 is arranged on the circumferential side surface of the right cylinder; a touch screen 3 electrically connected with the control module is arranged on the mounting groove 102; two handles 2 which are symmetrical along the axis are arranged on the outer circumferential surface of the right outer cylinder body.
The rotation and revolution requirements of the cutter 4 during hole milling can be met by utilizing the rotation mechanism, the revolution mechanism and the feeding mechanism; the eccentric adjustment of the cutter 4 and the autorotation mechanism is realized by utilizing the eccentric adjustment mechanism; the touch screen 3 and the control module are utilized to facilitate the realization of accurate automatic eccentric adjustment, thereby ensuring the quality control precision; the grab handle 2 is used for facilitating the operation of an operator to hold the hole milling device.
Further, the feeding mechanism comprises a feed screw 6, a feed driving motor 5, a left feeding cylinder body and a right feeding cylinder body; the left feeding cylinder body comprises a left end cover 7, a right end cover 8 and a left sliding cylinder body 9; the right feeding cylinder comprises a right sliding cylinder body 10;
The outer circumferential side surface of the left sliding cylinder 9 is coated with wear-resistant materials, and the left sliding cylinder 9 is transversely and slidably arranged on the left outer bobbin; the diameter of the outer circumferential surface of the left sliding cylinder 9 is slightly larger than that of the left end cover 7 and the right end cover 8; the left end cover 7 and the right end cover 8 are respectively fixed at the cylinder openings at the left side and the right side of the left sliding cylinder 9 in a closed manner;
Three first guide rods 11 are transversely connected and fixed on the inner walls of the left side and the right side of the right outer cylinder body, and the three first guide rods 11 penetrate through the left side wall and the right side wall of the right sliding cylinder body 10 in a sliding mode; two second guide rods 13 are fixedly connected between the left end face of the right sliding cylinder body 10 and the left end cover 7, and the two second guide rods 13 penetrate through the right end cover 8;
The left and right ends of the feed screw 6 are respectively rotatably arranged on the right side wall of the mounting groove 102 and the right side wall of the right outer cylinder, and the feed screw 6 is screwed on the right sliding cylinder 10 in a penetrating way; the feed driving motor 5 is installed in the installation groove 102 for driving the feed screw 6 to rotate, and the feed driving motor 5 is electrically connected with the control module.
The feeding driving motor 5 is used for driving the feeding screw rod 6 to rotate, so that the right sliding cylinder body 10 transversely moves along the three first guide rods 11, and the left feeding cylinder body synchronously transversely moves along the right sliding cylinder body 10 under the driving of the two second guide rods 13, so that the revolution mechanism, the autorotation mechanism and the cutter 4 are driven to transversely move, and feeding is realized; wear between the left sliding cylinder 9 and the left outer cylinder pipe is reduced by using the wear-resistant material on the outer surface of the left sliding cylinder 9, and the service life is prolonged.
Further, the revolution mechanism includes a revolution driving motor 14, an adapter flange 15, and a revolution cylinder 16;
The revolution cylinder 16 is rotatably installed on the left end cover 7 and the right end cover 8 in a penetrating manner; the revolution driving motor 14 is installed in the right sliding cylinder 10 and is electrically connected with the control module; the output shaft of the revolution driving motor 14 penetrates through the left side wall of the right sliding cylinder 10 and then is butted on the right end of the adapter flange 15; the left end of the adapter flange 15 is coaxially fixed on the right end of the revolution cylinder 16; a second eccentric inner hole 1601 is eccentrically provided on the left end of the revolution cylinder 16, and a rotation mechanism is mounted on the second eccentric inner hole 1601.
The revolution driving motor 14 is used for driving the revolution cylinder 16 to rotate through the adapter flange 15, so that the revolution cylinder 16 drives the rotation mechanism to revolve, and the revolution of the cutter 4 is realized.
Further, the rotation mechanism comprises an inner cylinder 17, a rotation driving motor 18 and a cutter receiving rod 19; the inner cylinder 17 is rotatably mounted on the second eccentric inner bore 1601; a first eccentric inner hole 1702 is eccentrically arranged on the left end of the inner cylinder 17; the rotation driving motor 18 is installed in the first eccentric inner hole 1702 and is electrically connected with the control module; the right end of the cutter receiving rod 19 is butted on the output shaft of the rotation driving motor 18, and the cutter 4 is mounted on the left end of the cutter receiving rod 19.
The rotation driving motor 18 is utilized to drive the cutter 4 to rotate through the cutter receiving rod 19, so that the rotation of the cutter 4 is realized.
Further, the eccentricity of the first eccentric inner hole 1702 is equal to that of the second eccentric inner hole 1601, and when the thinnest part of the inner cylinder 17 is located at the upper side and the thinnest part of the revolution cylinder 16 is located at the lower side, the tool eccentricity e is 0.
The first eccentric inner hole 1702 and the second eccentric inner hole 1601 are opposite in eccentric direction, so that the hole milling device has a large eccentric adjustment amount.
Further, the deviation adjusting mechanism comprises a deviation adjusting driving motor 20, a deviation adjusting screw rod 21, a deviation adjusting transmission module and an electromagnetic brake 22; the deflection adjusting transmission module comprises a sliding support 23 and a rotary lining 24;
The two ends of the deviation adjusting screw rod 21 are respectively rotatably arranged on the left end cover 7 and the left side wall of the right sliding cylinder 10, and the middle part of the deviation adjusting screw rod penetrates through the right end cover 8 in a rotating way; the deviation adjusting driving motor 20 is arranged in the right sliding cylinder 10, is used for driving the deviation adjusting screw rod 21 to rotate and is electrically connected with the control module; three lugs are provided on the outer circumferential surface of the slide mount 23; the two lugs are respectively installed on the two second guide rods 13 in a penetrating and sliding manner; the other lug is screwed on the deflection adjusting screw rod 21 through threads; the rotary lining 24 is coaxially and rotatably arranged in the sliding support 23 through a plurality of radial rotating assemblies and sleeved on the revolution cylinder 16; two guide sliding keys 1603 are provided on the outer circumferential surface of the revolution cylinder 16 in the axial direction; a key groove which is in sliding fit with the guide sliding key 1603 is provided on the inner wall of the rotary bushing 24; an avoidance hole 1602 is arranged on the wall of the revolution cylinder 16; an axial helical groove 1701 is provided on the outer circumferential surface of the inner cylinder 17; a driving rod 2401 with one end penetrating through the avoiding hole 1602 and extending into the axial spiral groove 1701 is arranged on the inner wall of the rotary lining barrel 24, and the diameter of the driving rod 2401 is equal to the width of the axial spiral groove 1701; the axial helical groove 1701 of the inner cylinder has the same width as the avoidance hole 1602 of the revolution cylinder;
A stub shaft 1703 coaxial with the outer circumferential surface of the inner cylinder 17 is provided on the right end of the inner cylinder 17; the electromagnetic brake 22 is installed on the right end of the short shaft 1703 and the right end of the revolution cylinder 16; when the electromagnetic brake 22 is powered on, the inner cylinder 17 and the revolution cylinder 16 relatively rotate; when the electromagnetic brake 22 is de-energized, the inner cylinder 17 rotates in synchronization with the revolving cylinder 16.
The deflection adjusting driving motor 20 is utilized to drive the deflection adjusting screw rod 21 to rotate, so that the sliding support 23 transversely moves along the two second guide rods 13, the rotary lining 24 transversely moves along the sliding support 23, the driving rod 2401 transversely moves along the avoidance hole 1602, the end part of the driving rod 2401 is always positioned in the axial spiral groove 1701 in the moving process, therefore, the inner cylinder 17 performs rotary motion, and the eccentric amount is changed because the eccentric directions of the first eccentric inner hole 1702 and the second eccentric inner hole 1601 are opposite, thereby realizing the adjustment of the eccentric amount of the cutter 4, and simultaneously realizing the eccentric adjustment of the autorotation mechanism through the deflection adjusting mechanism, namely realizing the radial deflection adjustment of the autorotation mechanism through the axial driving of the deflection adjusting mechanism, and being beneficial to reducing the radial size of the device; the columnar cam mechanism is formed by the axial spiral groove 1701 and the driving rod 2401, and the offset driving motor 20 is driven by a screw rod, so that automatic accurate eccentric adjustment is realized; enabling the skid support 23 to rotate the axial displacement onto the rotary liner 24 without affecting the rotation of the rotary liner 24 by means of several radial rotation assemblies; with the cooperation between the guide slide key 1603 and the key groove 2402, the rotation of the rotary liner 24 following the revolution cylinder 16 is ensured, reducing the circumferential force acting on the driving rod 2401; compared with the scheme that the inner cylinder 17 and the revolution cylinder 16 are locked at one end only through an electromagnetic brake adopted by the existing handheld screw device, the invention uses the axial spiral groove 1701 and the driving rod 2401 to mutually lock the middle parts of the inner cylinder 17 and the revolution cylinder 16 on the basis of the existing locking scheme, further carries out the mutual locking of the inner cylinder 17 and the revolution cylinder 16, and is beneficial to ensuring the machining precision of hole making.
Further, the radial rotation assembly comprises a rolling bearing 25 and a mounting shaft 26; one end of the mounting shaft 26 is fixed on the sliding support 23, and the other end is inserted into an inner ring hole of the rolling bearing 25; an annular groove is coaxially provided on the outer circumferential surface of the rotary liner 24; the outer ring of the rolling bearing 25 is fitted with the groove wall of the annular groove.
The axial displacement transmission of the sliding support 23 to the rotary bushing 24 is realized by the rolling bearing 25 and the mounting shaft 26, and the friction force between the rotary bushing 24 and the sliding support 23 is reduced by the rolling bearing 25.
Further, the portable bracket is also included; the portable bracket comprises a bottom plate 27, a positioning cylinder 34, an adjustable bracket and two groups of locking mechanisms; the adjustable bracket includes a support cylinder 28, an internally threaded sleeve 30, and a swivel 32; the lower end of the supporting cylinder 28 is fixed on the bottom plate 27; the internally threaded sleeve 30 is vertically slidably inserted on the upper end of the support cylinder 28; a height adjusting screw rod screwed on the internal thread sleeve 30 is vertically and rotatably arranged in the supporting cylinder 28; a hand crank 29 is rotatably installed on the supporting cylinder 28 in a penetrating manner; the penetrating end of the hand crank 29 drives the height adjusting screw rod to rotate through a worm and gear pair; a rotary seat 32 is fixed on the upper end of the internally threaded sleeve 30; the positioning cylinder 34 is rotatably mounted on the rotary seat 32 through a rotary shaft; a hand screw 33 having one end for pressing the rotation shaft is screwed to the rotation seat 32; an annular plate 35 is coaxially fixed at the right cylinder opening of the positioning cylinder 34; the right outer cylinder of the T-shaped outer cylinder 1 is mounted on the annular plate 35 by two sets of locking mechanisms, and the left outer cylinder tube is inserted on the positioning cylinder 34.
The portable bracket is utilized to provide support for the T-shaped outer cylinder body 1, an operator is not required to hold a milling hole at any time, the precision of milling the hole is ensured, and meanwhile, the working strength of the operator is reduced; the crank 29, the supporting cylinder 28, the internal thread sleeve 30 and the height adjusting screw rod are matched, and the crank 29 is rotated to drive the height adjusting screw rod to rotate so that the internal thread sleeve 30 vertically moves along the supporting cylinder 28, thereby adjusting the height of the T-shaped outer cylinder 1 to meet the hole milling requirements of different height positions; the direction of the T-shaped outer cylinder body 1 is convenient to adjust by utilizing the cooperation between the rotating seat 32 and the hand-screwed bolt 33, so that the hole milling requirements of the same height and different angles are met.
Further, the latch mechanism includes a lock tube 38, two lock plates 39, a lock lever 45, and a latch driving unit; the latch driving unit includes a latch driving motor 37 and a latch driving screw 41; two butt holes 49 are provided on the annular plate 35; the locking tube 38 is fixed on the left side groove wall of the mounting groove 102 in a penetrating manner, and the left end penetrates the butt joint hole 49; a locking square hole 36 is provided on the left side of the locking tube 38; a telescopic hole 47 is arranged on the wall of the right side of the locking square hole 36; the locking rod 45 is inserted into the telescopic hole 47; a guide groove 42 is transversely arranged on the wall of the telescopic hole 47; a guide slider 43 slidably fitted to the guide groove 42 is provided on the lock lever 45; an internal threaded hole is provided on the right end of the locking lever 45; the lock catch driving screw 41 is rotatably arranged in the locking pipe 38, and is screwed on the internal threaded hole; the left ends of the two locking plates 39 are hinged in the locking square holes 36; a reset groove 46 is provided on each adjacent edge of the locking plate 39; a return spring 40 is elastically connected between the bottoms of the two return grooves 46; an inclined pressing surface and a ramp surface 50 are provided on the right side of both locking plates 39; two triangular thrust blocks 48 are arranged at the left side orifices of the two butt joint holes 49; the left end of the locking rod 45 is provided with a hemispherical end for pressing the pressing surfaces of the two locking plates 39, so that the slope surface 50 is pressed against the corresponding side thrust block 48 after the right ends of the two locking plates 39 extend out of the locking square hole 36.
The lock driving motor 37 is used for driving the lock driving screw 41 to rotate, so that the locking rod 45 moves leftwards along the locking pipe 38, the hemispherical end parts of the locking rod 45 press the pressing surfaces of the two locking plates 39, and the right ends of the two locking plates 39 extend out of the locking square holes 36 and are tightly pressed on the left side surface of the annular plate 35, thereby realizing locking; by utilizing the cooperation between the guide groove 42 and the guide sliding block 43, the moving direction of the locking rod 45 is ensured, and the locking rod 45 is prevented from rotating along with the lock catch driving screw 41; the two locking plates 39 are prevented from being separated in the working process by the two thrust blocks 48, so that the locking reliability is ensured; when the lock lever 45 is moved rightward by the return spring 40, the two lock plates 39 are driven to move relatively, and the lock plates are retracted into the lock square holes 36, thereby unlocking the lock plates.
Further, the invention also provides a hole making method of the portable spiral hole milling device, which comprises the following steps:
Step 1, an operator inputs a diameter D H to be drilled, a diameter D t of a cutter 4, the number of teeth of the cutter 4 and workpiece materials into a control module by using a touch screen 3;
And 2, performing eccentric adjustment on the cutter 4 by using an offset adjusting mechanism, wherein the specific implementation steps are as follows:
A. The control module calculates the eccentric amount e of the cutter 4, namely e= (D H-dt)/2; according to the pitch of the deviation adjusting screw rod 21 and the rotation angle of the axial spiral groove 1701 of the inner cylinder 17, a control angle phi of the deviation adjusting driving device is obtained;
B. The control module controls the electromagnetic brake 22 to be powered on, and the inner cylinder 17 and the revolution cylinder 16 can rotate relatively;
C. According to the control angle phi, the control module drives the deviation adjusting driving motor 20 to work, and the cutter 4 is adjusted to a required eccentric position through the deviation adjusting screw rod 21, the deviation adjusting transmission module, the revolution cylinder 16 and the inner cylinder 17;
D. the control module controls the electromagnetic brake 10 to lose electricity, the inner cylinder 17 and the revolution cylinder 16 can not rotate relatively, so that the cutter 4 is kept at an eccentric position after the adjustment in the hole making process;
step 3, the control module regulates and controls the revolution mechanism, the axial feeding mechanism and the rotation mechanism to finish spiral milling holes cooperatively, and the specific implementation steps are as follows:
E. According to the type of the workpiece material, the control module determines the rotation speed, the revolution speed and the axial feeding speed, or an operator sets three speeds independently according to the abrasion state of the cutter 4, and then starts the rotation driving motor 17, the revolution driving motor 14 and the feeding driving motor 5 to drive the cutter 4 to rotate, revolve and axially feed until the hole is machined;
Step 4, repeatedly executing the step 3 when the holes with the same aperture are continuously machined; and (3) when the holes with different hole diameters continue to be machined, repeatedly executing the steps 1,2 and 3 until all the holes are machined.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a portable spiral mills hole device which characterized in that: comprises a T-shaped outer cylinder body (1), a rotation mechanism, a revolution mechanism, a feeding mechanism, a deviation adjusting mechanism and a control module; the feeding mechanism, the deviation adjusting mechanism and the control module are all arranged in the T-shaped outer cylinder body (1); the rotation mechanism is arranged on the revolution mechanism, and the left end of the rotation mechanism is used for installing a cutter (4); the revolution mechanism is arranged on the feeding device and is used for driving the rotation mechanism to revolve, and the feeding mechanism drives the revolution mechanism to feed; the eccentric amount of the rotation mechanism is regulated by the deviation regulating mechanism; the rotation mechanism, the revolution mechanism, the feeding mechanism and the deviation adjusting mechanism are all driven and controlled by the control module; a touch screen (3) which is electrically connected with the control module is arranged on the T-shaped outer cylinder body (1);
the feeding mechanism comprises a feeding screw rod (6), a feeding driving motor (5), a left feeding cylinder body and a right feeding cylinder body; the right feeding cylinder body is transversely and slidably arranged on the right side in the T-shaped outer cylinder body (1); the feed screw (6) is transversely arranged on the right side in the T-shaped outer cylinder body (1) in a rotating way and is used for driving the right feed cylinder body to transversely move; the feed driving motor (5) is used for driving the feed screw (6) to rotate and is electrically connected with the control module; the left feeding cylinder body is transversely and slidably arranged at the left side in the T-shaped outer cylinder body (1); the left feeding cylinder body is fixedly connected with the right feeding cylinder body through two second guide rods (13) penetrating through the left feeding cylinder body;
The revolution mechanism comprises a revolution driving motor (14), an adapter flange (15) and a revolution cylinder (16);
The revolution cylinder (16) is transversely arranged on the left feeding cylinder in a penetrating way in a rotating way; the revolution driving motor (14) is arranged on the right feeding cylinder body and is electrically connected with the control module; an output shaft of the revolution driving motor (14) is in butt joint with the right end of the revolution cylinder (16) through an adapter flange (15); a second eccentric inner hole (1601) for installing a rotation mechanism is eccentrically arranged on the left end of the revolution cylinder (16);
The rotation mechanism comprises an inner cylinder (17), a rotation driving motor (18) and a cutter receiving rod (19); the inner cylinder body (17) is rotatably arranged on the second eccentric inner hole (1601); a first eccentric inner hole (1702) is eccentrically arranged at the left end of the inner cylinder body (17); the autorotation driving motor (18) is arranged in the first eccentric inner hole (1702) and is electrically connected with the control module; the right end of the cutter receiving rod (19) is in butt joint with the output shaft of the rotation driving motor (18) and is used for installing a cutter (4);
The deviation adjusting mechanism comprises a deviation adjusting driving motor (20), a deviation adjusting screw rod (21), a deviation adjusting transmission module and an electromagnetic brake (22);
The deviation adjusting screw rod (21) is rotatably and transversely arranged on the right feeding cylinder body and rotatably penetrates through the left feeding cylinder body; the deviation adjusting driving motor (20) is used for driving the deviation adjusting screw rod (21) to rotate and is electrically connected with the control module; the two second guide rods (13) penetrate through the sliding support (23) in a sliding mode, and the deviation adjusting screw rod (21) penetrates through the sliding support (23) in a threaded screwing mode; the rotary lining cylinder (24) is coaxially and rotatably arranged in the sliding support (23) through a plurality of radial rotating assemblies and sleeved on the revolution cylinder body (16);
An avoidance hole (1602) is axially arranged on the revolution cylinder body (16); an axial spiral groove (1701) is spirally arranged on the outer circumferential surface of the inner cylinder (17); a driving rod (2401) with one end penetrating through the avoidance hole (1602) and extending into the axial spiral groove (1701) is arranged on the inner wall of the rotary lining barrel (24), and the diameter of the driving rod (2401) is equal to the width of the axial spiral groove (1701); the width of the axial spiral groove (1701) of the inner cylinder body is equal to the width of the avoidance hole (1602) of the revolution cylinder body;
The electromagnetic brake (22) is used for controlling the relative rotation state of the inner cylinder (17) and the revolution cylinder (16) under the control of the control module;
The radial rotation assembly comprises a rolling bearing (25) and a mounting shaft (26); the mounting shaft (26) is fixed on the sliding support (23), and the other end of the mounting shaft is mounted on the rolling bearing (25); an annular groove which is matched with a rolling bearing (25) is coaxially arranged on the outer circumferential surface of the rotary lining cylinder (24).
2. The portable helical milling device of claim 1, wherein: the first eccentric inner bore (1702) and the second eccentric inner bore (1601) are of equal eccentricity.
3. The portable helical milling device of claim 1, wherein: the portable bracket is also included; the portable bracket comprises a bottom plate (27), a positioning cylinder body (34), an adjustable bracket and two groups of locking mechanisms; the adjustable bracket comprises a supporting cylinder body (28), an internal thread sleeve (30) and a rotating seat (32); the supporting cylinder (28) is vertically fixed on the bottom plate (27); the internal thread sleeve (30) is inserted on the upper end of the supporting cylinder (28) in a height-adjustable way; the rotating seat (32) is fixed on the upper end of the internally threaded sleeve (30); the positioning cylinder body (34) is rotatably and adjustably arranged on the rotary seat (32) through a rotary shaft; an annular plate (35) is coaxially fixed at the right cylinder opening of the positioning cylinder body (34); the T-shaped outer cylinder body (1) is arranged on the annular plate (35) through two groups of locking mechanisms, and the left side of the T-shaped outer cylinder body is inserted on the positioning cylinder body (34).
4. A portable helical milling device according to claim 3, wherein: the locking mechanism comprises a locking pipe (38), two locking plates (39), a locking rod (45) and a locking driving unit; the locking pipe (38) is fixed on the T-shaped outer cylinder body in a penetrating way, and the left end of the locking pipe penetrates through the annular plate (35); the left ends of the two locking plates (39) are hinged in the locking pipe (38), and the middle parts are connected through a reset spring (40); two pairs of thrust blocks (48) are arranged on the left side surface of the annular plate (35); the locking rod (45) is arranged on the locking pipe (38) and is used for extruding the two locking plates (39) under the drive of the lock catch driving unit, so that the right ends of the two locking plates (39) extending out of the locking pipe (38) are tightly pressed on the two thrust blocks (48) of the same pair.
5. The hole milling method of the portable spiral hole milling device according to claim 1, wherein: the method comprises the following steps:
Step 1, an operator inputs the diameter D H of a hole to be made, the diameter D t of a cutter (4), the number of teeth of the cutter (4) and workpiece materials into a control module by using a touch screen (3);
and 2, performing eccentric adjustment on the cutter (4) by using an offset adjusting mechanism, wherein the method comprises the following specific implementation steps:
A. The control module calculates the eccentric quantity e of the cutter (4), namely e= (D H-dt)/2; according to the structural parameters of the deviation adjusting mechanism, the control angle phi of the deviation adjusting driving device is obtained;
B. The control module controls the deviation adjusting mechanism to enable the rotation mechanism and the revolution mechanism to relatively rotate;
C. According to the control angle phi, the control module drives the deviation adjusting mechanism to adjust the cutter (4) to a required eccentric position;
D. The control module controls the deviation adjusting mechanism to enable the autorotation mechanism to rotate along with the revolution mechanism, and adjustment is completed;
step 3, the control module regulates and controls the revolution mechanism, the axial feeding mechanism and the rotation mechanism to finish spiral milling holes cooperatively, and the specific implementation steps are as follows:
E. According to the type of the workpiece material, the control module determines the rotation speed, the revolution speed and the axial feeding speed, or an operator is set independently by combining the abrasion state of the cutter (4), and then the rotation mechanism, the revolution mechanism and the feeding mechanism are started to drive the cutter (4) to rotate, revolve and axially feed until the hole is machined;
Step 4, repeatedly executing the step 3 when the holes with the same aperture are continuously machined; and (3) when the holes with different hole diameters continue to be machined, repeatedly executing the steps 1,2 and 3 until all the holes are machined.
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| CN202310131073.3A CN116037999B (en) | 2023-02-17 | 2023-02-17 | Portable spiral hole milling device and hole milling method |
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| CN202310131073.3A CN116037999B (en) | 2023-02-17 | 2023-02-17 | Portable spiral hole milling device and hole milling method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070686A (en) * | 2021-02-26 | 2021-07-06 | 南京晓庄学院 | Off-line adjusting method for tool eccentricity based on robot spiral hole milling platform |
| CN215147146U (en) * | 2021-03-05 | 2021-12-14 | 南京晓庄学院 | Spiral hole milling device for online separation of eccentric adjusting mechanism of cutter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4446003B2 (en) * | 2008-02-18 | 2010-04-07 | 株式会社三共製作所 | Cutting unit and machine tool |
| US20120294689A1 (en) * | 2010-01-29 | 2012-11-22 | Osg Corporation | Hole making apparatus |
| CN202963571U (en) * | 2012-06-14 | 2013-06-05 | 南京信息职业技术学院 | Automatic spiral hole milling device |
| CN102717135B (en) * | 2012-06-14 | 2014-10-22 | 南京信息职业技术学院 | Automatic spiral hole milling device and method |
| CN103128354B (en) * | 2013-01-31 | 2015-03-11 | 南京航空航天大学 | Eccentricity adjustment mechanism and handheld helical hole milling device thereof and helical hole milling method |
| CN104439445B (en) * | 2014-11-12 | 2016-11-30 | 大连理工大学 | The helical milling device in a kind of automatic adjustment aperture and method of work thereof |
| JP5923647B1 (en) * | 2015-06-17 | 2016-05-24 | 酒井精工株式会社 | Nut tap |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070686A (en) * | 2021-02-26 | 2021-07-06 | 南京晓庄学院 | Off-line adjusting method for tool eccentricity based on robot spiral hole milling platform |
| CN215147146U (en) * | 2021-03-05 | 2021-12-14 | 南京晓庄学院 | Spiral hole milling device for online separation of eccentric adjusting mechanism of cutter |
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